Subject
10 free books about soils, free to read online. Chapter 1 of any book is free, no account needed.
Crops and Methods for Soil Improvement
Alva Agee
Principles and practice of agricultural analysis. Volume 1 (of 3), Soils
Harvey Washington Wiley
Principles and practice of agricultural analysis. Volume 3 (of 3), Agricultural products
Soils, their formation, properties, composition, and relations to climate and plant growth in the humid and arid regions
Eugene W. Hilgard
Principles and practice of agricultural analysis. Volume 2 (of 3), Fertilizers
The Formation of Vegetable Mould Through the Action of Worms With Observations on Their Habits
Charles Darwin
The soil solution: The nutrient medium for plant growth
Frank K. Cameron
Lessons on Soil
Edward J. Russell
The Farm That Won't Wear Out
Cyril G. Hopkins
The Story of the Soil; from the Basis of Absolute Science and Real Life
